Peniocereus johnstonii Britton & Rose in J. Wash. Acad. Sci. 12: 329. 1922
Peniocereus johnstonii in J. Wash. Acad. Sci. 12: 329. 1922
is basionym for Cereus johnstonii, Kakteen: 126. 1929
Peniocereus johnstonii in J. Wash. Acad. Sci. 12: 329. 1922